Special elevator for carrying trolley

Abstract

A lifting machine special for a carrying trolley comprises a lifting frame, a lifting seat which can move up and down and is arranged on the lifting frame and used for bearing the carrying trolley, a clamping and positioning device which is arranged on the lifting seat and used for clamping the carrying trolley, and a lifting device which is arranged on the lifting frame, connected with the lifting seat and used for driving the lifting seat to move up and down. The clamping and positioning device comprises two rotatable clamping blocks which are oppositely arranged at the front end of the lifting seat, two rotating mechanisms which are oppositely arranged on the lifting seat and are respectively connected with and control the relative clamping blocks to rotate, and a proximity switch which is arranged at the rear end of the lifting seat and is used for detecting whether the carrying trolley is in place or not; by limiting the structure of the elevator and additionally arranging the clamping and positioning device, the carrying trolley on the lifting base is clamped and positioned, the risk that the carrying trolley shakes in the lifting process is greatly reduced, and the lifting stability of the carrying trolley is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of hoist equipment, and in particular relates to a special hoist for transporting trolleys. Background Art

[0002] An elevator is a conveying machine that transports goods from lower floors to higher floors. Existing elevators often share elevators with people, which poses a risk of injury. Customizing dedicated elevators and cabins for elevators is extremely costly. Furthermore, the conveying mechanism of existing elevators is often fixed, lifting relatively light loads, making them unsuitable for transporting heavy objects loaded on elevators. Improvements are urgently needed. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a special hoist for transporting trolleys.

[0004] The utility model adopts the following technical solutions:

[0005] A special hoist for transporting trolleys comprises a lifting frame, a lifting seat which is movable up and down and is arranged on the lifting frame for receiving the transporting trolley, a clamping and positioning device arranged on the lifting seat for clamping the transporting trolley, and a lifting device which is arranged on the lifting frame and is connected to and drives the lifting seat to move up and down.

[0006] The clamping and positioning device includes two clamping blocks rotatably arranged at the front end of the lifting seat, two rotating mechanisms relatively arranged on the lifting seat and respectively connected to and controlling the rotation of the relative clamping blocks, and a proximity switch arranged at the rear end of the lifting seat for detecting whether the transport trolley is in place. When the transport trolley enters the specified position of the lifting seat, the rotating mechanism controls the relative clamping blocks to rotate according to the signal fed back by the proximity switch until they are against the front end of the transport trolley to clamp the transport trolley.

[0007] Preferably, the rotating mechanism includes a rotating seat provided on the lifting seat for mounting the clamping block, a clamping cylinder provided on the lifting seat and rotatably connected to the clamping block, and a mounting seat provided on the lifting seat for mounting the clamping cylinder.

[0008] Preferably, the lifting seat includes a lifting seat body, a limiting frame arranged on the lifting seat body, and a receiving cavity extending inward from the front end of the limiting frame for the transport trolley to enter, and the proximity switch is arranged on the limiting frame at the rear end of the receiving cavity.

[0009] Preferably, the lifting seat further comprises a plurality of reinforcement blocks arranged around the periphery of the limiting frame, and the reinforcement blocks are arranged on the lifting seat body and connected to the limiting frame.

[0010] Preferably, the lifting device includes a lifting motor, two lifting toothed belt assemblies relatively arranged on the lifting frame, a transmission mechanism arranged between the lifting motor and the two lifting toothed belt assemblies, a counterweight frame connected to the two lifting toothed belt assemblies and a plurality of counterweight blocks arranged in the counterweight frame, the lifting toothed belt assembly includes an upper gear and a lower gear relatively arranged up and down and a lifting toothed belt rotatably arranged between the upper gear and the lower gear, the lifting seat is connected to one side of the lifting toothed belt, and the counterweight frame is connected to the other side of the lifting toothed belt.

[0011] Preferably, the transmission mechanism includes a first transmission shaft connected between the two lower gears, a second transmission shaft connected between the two upper gears, a rotating wheel rotatably arranged on the output shaft of the lifting motor, a transmission wheel arranged on the first transmission shaft, and a conveyor belt arranged between the rotating wheel and the transmission wheel.

[0012] Preferably, the lifting device includes a first guide mechanism provided on the lifting frame and connected to the lifting seat, and the first guide mechanism includes two guide rails extending in the vertical direction and two guide sliders provided on the lifting seat and cooperating with the two guide rails.

[0013] Preferably, the lifting device also includes a second guide mechanism arranged on the lifting frame and connected to the counterweight frame, the second guide mechanism includes two guide columns extending in the vertical direction, two upper guide bearing seats and two lower guide bearing seats respectively arranged on the two guide columns relative to each other, two upper connecting plates respectively connected to the two upper guide bearing seats and the upper end of the counterweight frame, and two lower connecting plates respectively connected to the two lower guide bearing seats and the lower end of the counterweight frame.

[0014] Preferably, a counterweight slot for placing a counterweight block and a fixing mechanism for fixing multiple counterweight blocks are formed in the counterweight frame, and the fixing mechanism includes two fixing screws arranged in the counterweight slot at intervals along the vertical direction, two lower positioning nuts respectively arranged at the lower ends of the two fixing screws that can press against the counterweight block, two upper positioning nuts respectively arranged at the upper ends of the two fixing screws that can be locked on the upper end of the counterweight frame, and two fixing nuts respectively arranged on the two fixing screws that can be locked and fixed to the upper end of the counterweight block.

[0015] Preferably, a clearance groove for the counterweight block to enter the counterweight slot is formed on the counterweight frame, and the clearance groove extends inward from the side surface of the counterweight frame and communicates with the counterweight slot.

[0016] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are as follows: the present application limits the structure of the elevator, adds a clamping and positioning device, and clamps and positions the transport trolley on the lifting seat, thereby greatly reducing the risk of shaking during the lifting of the transport trolley and ensuring the stability of the lifting of the transport trolley; in addition, the structure of the lifting device is specifically limited, the counterweight frame and counterweight block are added, and the counterweight of the elevator is increased, so that the center of gravity of the elevator is lowered, thereby achieving a large load and realizing stable transportation of the transport trolley at different heights, and the overall cost of the equipment body is relatively low, which meets the lifting needs of the transport trolley with large loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is the status diagram of the lifting seat carrying the transport trolley Figure 1 ;

[0019] Figure 3 This is the status diagram of the lifting seat carrying the transport trolley Figure 2 ;

[0020] Figure 4 It is a structural diagram of the lifting seat;

[0021] Figure 5 It is a partial structural diagram of the utility model;

[0022] Figure 6 Schematic diagram of the lifting device Figure 1 ;

[0023] Figure 7 Schematic diagram of the lifting device Figure 2 ;

[0024] In the figure, 1-lifting frame, 2-lifting seat, 3-clamping positioning device, 4-lifting device, 21-lifting seat body, 22-limiting frame, 23-receiving cavity, 24-reinforcement block, 31-clamping block, 32-rotating mechanism, 321-rotating seat, 322-clamping cylinder, 323-mounting seat, 324-fisheye bearing, 33-proximity switch, 41-lifting motor, 42-lifting toothed belt assembly, 421-upper gear, 422-lower gear, 423-lifting toothed belt, 43-transmission mechanism, 431-first transmission shaft, 432-second transmission shaft , 433-rotating wheel, 434-transmission wheel, 435-conveyor belt, 44-counterweight frame, 441-counterweight slot, 442-yield slot, 45-counterweight block, 46-first guide mechanism, 461-guide rail, 462-guide slider, 47-second guide mechanism, 471-guide column, 472-upper guide bearing seat, 473-lower guide bearing seat, 474-upper connecting plate, 475-lower connecting plate, 48-fixing mechanism, 481-fixing screw, 482-lower positioning nut, 483-upper positioning nut, 484-fixing nut. DETAILED DESCRIPTION

[0025] The present invention is further described below through specific implementation methods.

[0026] Reference Figures 1 to 7 As shown, a special hoist for transporting trolleys includes a lifting frame 1, a lifting seat 2 that can be moved up and down and is set on the lifting frame 1 to receive the transporting trolley, a clamping and positioning device 3 set on the lifting seat 2 to clamp the transporting trolley, and a lifting device 4 set on the lifting frame 1 and connected to drive the lifting seat 2 to move up and down.

[0027] The lifting base 2 includes a lifting base body 21, a limiting frame 22 arranged on the lifting base body 21, a receiving cavity 23 extending inward from the front end of the limiting frame 22 for the transport trolley to enter, and a plurality of reinforcing blocks 24 arranged around the outer periphery of the limiting frame 22, wherein the reinforcing blocks 24 are arranged on the lifting base body 21 and connected to the limiting frame 22.

[0028] The clamping and positioning device 3 includes two clamping blocks 31 that are rotatable relative to each other at the front end of the lifting seat 21, two rotating mechanisms 32 that are relatively arranged on the lifting seat 2 and are respectively connected to and control the rotation of the relative clamping blocks 31, and a proximity switch 33 that is arranged on the limit frame 22 at the rear end of the receiving cavity 23 for detecting whether the transport trolley is in place. When the transport trolley enters the specified position of the lifting seat 2, the rotating mechanism 32 controls the relative clamping block 31 to rotate against the front end of the transport trolley according to the signal feedback from the proximity switch 33 to clamp the transport trolley, ensuring that the transport trolley will not be at risk of shaking during the lifting process, thereby achieving a stable lifting effect.

[0029] The rotating mechanism 32 includes a rotating base 321 provided on the lifting base 2 for mounting the clamping block 31, a clamping cylinder 322 provided on the lifting base 2 and rotatably connected to the clamping block 31, and a mounting base 323 provided on the lifting base 2 for mounting the clamping cylinder 322; wherein the clamping cylinder 322 is connected to the clamping block 31 via a fisheye bearing 324.

[0030] The lifting device 4 includes a lifting motor 41, two lifting toothed belt assemblies 42 relatively arranged on the lifting frame 1, a transmission mechanism 43 arranged between the lifting motor 41 and the two lifting toothed belt assemblies 42, a counterweight frame 44 connected to the two lifting toothed belt assemblies 42, a plurality of counterweight blocks 45 arranged in the counterweight frame 44, a first guide mechanism 46 arranged on the lifting frame 1 and connected to the lifting seat 2, and a second guide mechanism 47 arranged on the lifting frame 1 and connected to the counterweight frame 44.

[0031] The lifting toothed belt assembly 42 includes an upper gear 421 and a lower gear 422 arranged opposite to each other in the upper and lower directions, and a lifting toothed belt 423 rotatably arranged between the upper gear 421 and the lower gear 422, wherein the lifting seat 2 is connected to one side of the lifting toothed belt 423, and the counterweight frame 44 is connected to the other side of the lifting toothed belt 423. The lifting seat 2 and the counterweight frame 44 are respectively arranged on both sides of the lifting toothed belt 423. By arranging the counterweight frame 44 and the counterweight block 45 on the other side of the lifting toothed belt 423 opposite to the lifting seat 2, the counterweight of the elevator is increased, and the center of gravity of the elevator is lowered, thereby achieving a large load and realizing stable transportation of the transport trolley at different heights, and the overall cost of the equipment body is low; and during the lifting process, the counterweight blocks 45 of different weights can be freely matched on the counterweight frame 44 according to the weight of the lifted object, thereby achieving a stable lifting effect.

[0032] The transmission mechanism 43 includes a first transmission shaft 431 connected between the two lower gears 422, a second transmission shaft 432 connected between the two upper gears 421, a rotating wheel 433 rotatably arranged on the output shaft of the lifting motor 41, a transmission wheel 434 arranged on the first transmission shaft 431, and a conveyor belt 435 arranged between the rotating wheel 433 and the transmission wheel 434.

[0033] The counterweight frame 44 includes a counterweight groove 441 formed therein for placing a counterweight block 45, a fixing mechanism 48 for fixing multiple counterweight blocks 45, and a clearance groove 442 for the counterweight block 45 to enter the counterweight groove 441, wherein the clearance groove 442 extends inward from the side of the counterweight frame 44 and communicates with the counterweight groove 441; the fixing mechanism 48 includes two fixing screws 481 spaced apart in the vertical direction in the counterweight groove 441, two lower positioning nuts 482 respectively provided at the lower ends of the two fixing screws 481 and capable of supporting the counterweight block 45, and two fixing screws 481 respectively provided at the upper ends of the two fixing screws 481 and capable of being locked on the counterweight frame 44. The two upper positioning nuts 483 at the ends and the two fixing nuts 484 respectively arranged on the two fixing screws 481 can be locked and fixed on the upper ends of the counterweight blocks 45. When the counterweight of the counterweight frame 44 is adjusted, the number of counterweight blocks 45 is increased or decreased through the makeshift groove 442, and then the multiple counterweight blocks 45 in the counterweight groove 441 are fixed through the fixing screw 481 and the lower positioning nut 482, the upper positioning nut 483 and the fixing nut 484 to determine the stability of the counterweight blocks 45 during the operation of the hoist, thereby achieving a stable lifting effect; specifically, the counterweight block 45 is formed with a makeshift hole for the fixing screw 481 to pass through.

[0034] The first guide mechanism 46 includes two guide rails 461 extending in the vertical direction and two guide sliders 462 provided on the lifting base 2 and cooperating with the two guide rails 461. Through the cooperation between the guide sliders 462 and the wire rails 461, the lifting base 2 can move up and down stably, achieving a stable lifting effect.

[0035] The second guide mechanism 47 includes two guide columns 471 extending in the vertical direction, two upper guide bearing seats 472 and two lower guide bearing seats 473 respectively arranged on the two guide columns 471 relative to each other, two upper connecting plates 474 respectively connected to the two upper guide bearing seats 472 and the upper ends of the counterweight frame 44, and two lower connecting plates 475 respectively connected to the two lower guide bearing seats 473 and the lower ends of the counterweight frame 44; through the cooperation of the upper guide bearing seats 472, the lower guide bearing seats 473 and the guide columns 471, the counterweight frame 44 can move up and down stably to achieve a stable lifting effect.

[0036] The present application limits the structure of the hoist, adds a clamping and positioning device 3, and clamps and positions the transport trolley on the lifting seat 2, thereby greatly reducing the risk of shaking during the lifting of the transport trolley and ensuring the stability of the lifting of the transport trolley; in addition, the structure of the lifting device 4 is specifically limited, and a counterweight frame 44 and a counterweight block 45 are added to increase the counterweight of the hoist, so that the center of gravity of the hoist is lowered, thereby achieving a large load and realizing stable transportation of the transport trolley at different heights. The overall cost of the equipment body is relatively low, which meets the lifting needs of the transport trolley with a large load.

[0037] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the present patent.

Claims

1. A special hoist for transporting trolleys, characterized by: It includes a lifting frame, a lifting seat that can be moved up and down and is set on the lifting frame to receive the transport trolley, a clamping positioning device set on the lifting seat to clamp the transport trolley, and a lifting device set on the lifting frame to connect and drive the lifting seat to move up and down. The clamping and positioning device includes two clamping blocks rotatably arranged at the front end of the lifting seat, two rotating mechanisms relatively arranged on the lifting seat and respectively connected to and controlling the rotation of the relative clamping blocks, and a proximity switch arranged at the rear end of the lifting seat for detecting whether the transport trolley is in place. When the transport trolley enters the specified position of the lifting seat, the rotating mechanism controls the relative clamping blocks to rotate according to the signal fed back by the proximity switch until they are against the front end of the transport trolley to clamp the transport trolley.

2. The special hoist for transporting trolleys according to claim 1, characterized in that: The rotating mechanism includes a rotating seat arranged on the lifting seat for installing a clamping block, a clamping cylinder arranged on the lifting seat and rotatably connected to the clamping block, and a mounting seat arranged on the lifting seat for installing the clamping cylinder.

3. The special hoist for transporting trolley according to claim 1, characterized in that: The lifting seat includes a lifting seat body, a limiting frame arranged on the lifting seat body, and a receiving cavity extending inward from the front end of the limiting frame for the transport trolley to enter. The proximity switch is arranged on the limiting frame at the rear end of the receiving cavity.

4. The special hoist for transporting trolleys according to claim 3, characterized in that: The lifting seat further comprises a plurality of reinforcing blocks arranged around the outer periphery of the limiting frame, and the reinforcing blocks are arranged on the lifting seat body and connected with the limiting frame.

5. The special hoist for transporting trolley according to claim 1, characterized in that: The lifting device includes a lifting motor, two lifting toothed belt assemblies relatively arranged on the lifting frame, a transmission mechanism arranged between the lifting motor and the two lifting toothed belt assemblies, a counterweight frame connected to the two lifting toothed belt assemblies, and a plurality of counterweight blocks arranged in the counterweight frame. The lifting toothed belt assembly includes an upper gear and a lower gear relatively arranged up and down and a lifting toothed belt rotatably arranged between the upper gear and the lower gear. The lifting seat is connected to one side of the lifting toothed belt, and the counterweight frame is connected to the other side of the lifting toothed belt.

6. The special hoist for transporting trolley according to claim 5, characterized in that: The transmission mechanism includes a first transmission shaft connected between the two lower gears, a second transmission shaft connected between the two upper gears, a rotating wheel rotatably arranged on the output shaft of the lifting motor, a transmission wheel arranged on the first transmission shaft, and a conveyor belt arranged between the rotating wheel and the transmission wheel.

7. The special hoist for transporting trolley according to claim 6, characterized in that: The lifting device includes a first guide mechanism arranged on the lifting frame and connected to the lifting seat, and the first guide mechanism includes two guide rails extending along the vertical direction and two guide sliding blocks arranged on the lifting seat and cooperating with the two guide rails.

8. The special hoist for transporting trolley according to claim 6, characterized in that: The lifting device also includes a second guide mechanism arranged on the lifting frame and connected to the counterweight frame, the second guide mechanism includes two guide columns extending in the vertical direction, two upper guide bearing seats and two lower guide bearing seats respectively arranged on the two guide columns relative to each other, two upper connecting plates respectively connected to the two upper guide bearing seats and the upper end of the counterweight frame, and two lower connecting plates respectively connected to the two lower guide bearing seats and the lower end of the counterweight frame.

9. The special hoist for transport trolley according to claim 6, characterized in that: The counterweight frame is provided with a counterweight slot for placing the counterweight block and a fixing mechanism for fixing multiple counterweight blocks, the fixing mechanism comprising two fixing screws arranged in the counterweight slot at intervals along the vertical direction, two lower positioning nuts respectively arranged at the lower ends of the two fixing screws and capable of supporting the counterweight block, two upper positioning nuts respectively arranged at the upper ends of the two fixing screws and capable of being locked on the upper end of the counterweight frame, and two fixing nuts respectively arranged on the two fixing screws and capable of being locked and fixed on the upper end of the counterweight block.

10. The special hoist for transport trolley according to claim 9, characterized in that: The counterweight frame is formed with a clearance groove for the counterweight block to enter the counterweight slot, and the clearance groove extends inward from the side surface of the counterweight frame and is communicated with the counterweight slot.

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